Answer: The are found in colder seas because that is where its prey lives and they have a high metabolism.
g The dominant food chain in a kelp forest ecosystem is made up of the three species below, listed with their trophic levels. If sharks enter a kelp forest ecosystem and begin feeding on sea otters, they would have a positive indirect effect on which species
Answer:
Crustaceans, sea urchins, mollusks and fish.
Explanation:
The positive effect occurs on crustaceans, sea urchins, mollusks and fish if the shark feeds on sea otter because sea otter feeds on crustaceans, sea urchins, mollusks and fish. Decrease occur in the population of sea otter due to introduction of shark in the ecosystem which indirectly increases the population of crustaceans, sea urchins, mollusks and fish. So we can say that a positive indirect effect occurs on crustaceans, sea urchins, mollusks and fish due to shark.
In the trp operon, tryptophan serves as a(n) ___________________, binding to the repressor and causing it to block to attachment of RNA polymerase.
a. operator
b. inducer
c. repressor
d. corepressor
e. gene
In the trp operon, tryptophan acts as a corepressor, binding to the repressor and inducing it to stop to attachment of RNA polymerase. Therefore, option D is correct.
What is trp operon?The trp operon is a group of genes in bacteria that are involved in the biosynthesis of the amino acid tryptophan. The operon is composed of five structural genes, trpE, trpD, trpC, trpB, and trpA. These genes code for the enzymes involved in tryptophan biosynthesis.
In the trp operon, the presence of tryptophan serves as a corepressor. The tryptophan molecule binds to the trp repressor protein, causing a conformational change that allows it to bind to the operator region of the operon.
This blocks the attachment of RNA polymerase to the promoter, preventing transcription of the genes involved in tryptophan biosynthesis. Thus, option D is correct.
Learn more about trp operon, here:
https://brainly.com/question/14273950
#SPJ2
A lipoprotein particle functions to ________. dissolve polar lipids for excretion transport nonpolar lipid to body cells metabolize lipids into new substances dissolve polar lipids in urine store lipids in the tissues
Answer:
The correct answer is ''transport nonpolar lipid to body cells''
Explanation:
Lipoproteins are macromolecules whose function is to package insoluble lipids in the aqueous medium of plasma and transport them from the intestine and liver to peripheral tissues. They transport all the lipids that circulate in the plasma: free and esterified cholesterol, triglycerides and phospholipids. Plasma lipoproteins constitute a polydisperse and heterogeneous system of particles of almost spherical morphology, which have a hydrophobic nucleus or core formed by nonpolar lipids, that is, esterified cholesterol and triglycerides, and by a hydrophilic surface layer containing unesterified cholesterol, phospholipids and specific proteins called apoproteins.
Anytime that a substance changes size, shape, or temperature it would be considered a------------------ change. But, if it changed properties such as its density, pH, or how it reacts with other substances it is most likely a -------------- change
Answer:
physical
chemical
Explanation:
changes in size and shape are just physical and changes into a different substance are chemical
What's the role of GALT to the digestive system
Answer: to protect the body from invasion in the gut
Explanation: Gut-associated lymphoid tissue (GALT) is a component of the mucosa-associated lymphoid tissue (MALT) which works in the immune system to protect the body from invasion in the gut.
Vertebrate embryos all follow a very similar developmental process. Which statement could explain this similarity? (1 point)
O All vertebrates develop a backbone that protects the spinal cord.
O All vertebrates require the same nutrients during embryological development
O All vertebrates inherit the same sequence of DNA from their parents.
O All vertebrates live in similar environments which require the same adaptations
A) All vertebrates develop a backbone that protects the spinal cord.
Vertebrate embryos all follow a very similar development process because all vertebrates inherit the same sequence of DNA from their parents.
Why vertebrate embryos follow similar development process?Early developmental sequences of all vertebrates are similar due to common ancestry.
All vertebrate embryos, have gill slits and tails and by the adulthood, they lose the tail.
From the study of ontogeny, one can discover about transformation of species through evolutionary change.
Here, ontogeny is the process of individual development from a single cell to adulthood of the organism.
To know more about vertebrate embryo development :
https://brainly.com/question/8449465
#SPJ2
What is the name of the second structure involved in the reflex arc
Answer:
Sensory neurone
Explanation:
each reflex has a sensory neurone.The sensor may be the nerve endings of the sensory neurone
Why it is important to evaluate impact assessment studies before any development could be made on the environment?
Answer:
environmental and economic benefits can be archived such as reduce cost and of project implementation and design,avoided treatment / clean up costs and impacts of laws and regulations
As______ flow downhill, they can break off pieces of rock then carry the rock pieces with them.
Group of answer choices
Rain waters
Glaciers
Sands
Animals
what did the soil conservation act of 1935 call for?
a. poor farming practices and loss of farming soil
b. a federal bureau to regulate the use of federal lands
c. planting native grasses and tree instead of crops
d. a national soil- and water-conservation program
C-planting native grasses and tree instead of crops
______ is when rocks are broken down into smaller pieces, then the pieces are moved to new places.
Group of answer choices
Weathering
Deposition
Landforms
Erosion
Answer:
Wethering
Explanation:
Because when it rains, the water gets into the rock day by day. And then it breaks down and gets washed away.
3
1. Which one of the following scientists
was NOT involved with discovery of
viruses?
(1 Point)
Martinus Beijerinck
Felix d'Herrelle
Robert Fleming
3
Dimitri Ivanowsky
Answer:
Robert Flemming
Explanation:
This is because Robert Flemming was a Scottish actor and he invented black guitar. Scientist starts to discover virus in the 1930s . The first virus discovered was tobacco virus and it is discovered by Dimitri IIvanowsky. Electrons microscope was use to discover it because it was too tiny.
PLEASE HELP QUICK!!!
Which of the following is caused by mutations?
A. Mutations can cause genetic disorders.
B. Mutations never have any effect on
organisms.
C. Mutations only cause problems on the sex
chromosomes.
D. Mutations only cause problems on autosomal
chromosomes.
Answer:
C
Explanation:
Sssssddddddddddddsdd
Males produce 1n gametes during ______________ in organs called_______________. Males produce _____________ throughout most of their lives.
Answer:
Males produce 1n gametes during: eating solid foods like PORK, GOLAGE, CHICKEN in organs called TESTES males produce :Melting acid from internal intestine throughout moat of their lives.
Explanation:
HOPE IT HELPS!
Where is the diaphragm located in relation to the lungs?
a) inferior
b) medial
c) superior
{ Relating to a crash course video called: Respiratory System Crash Course}
[any information would be very much appreciated! thank you :D]
Answer:
A. Inferior
Explanation:
If you're not familiar with anatomical terms, a quick summarization would be:
-Inferior: below
-Superior: above
-Medial: towards the midline of the body
Upon googling a picture for the diaphragm and lungs, you will see that the diaphragm is a muscle situated directly below the lungs. The phrase "located in relation to" is asking you specifically "when compared to". Therefore, since the diaphragm is located below the lungs, the answer would be inferior.
I hope this answer and explanation helped you understand this topic a little bit more!
The diaphragm is located in inferior to lungs.
What is diaphragm ?
In mammals, the diaphragm is a dome-shaped, muscular and membrane tissue that divides the thoracic and abdominal compartments.
It is the primary respiratory muscle.
The diaphragm gets contract and flatten up during we inhale, while the chest cavity expands.
Vacuum is created due to contraction, which pulls air into the lungs.
Exhalation relaxes the diaphragm and causes it to return to its domelike shape, pushing air out of the lungs.
So we can conclude that the diaphragm is the muscle that connects the chest cavity to the abdomen and it is the primary respiratory muscle, when one breathes in, the diaphragm muscle contracts, causing the lungs to expand and vice versa, and most importantly it located inferior to lungs.
Learn more about Diaphragm here:
https://brainly.com/question/1419910
#SPJ2
Please select the word from the list that best fits the definition
An echinoderm that is covered with movable spines and that eats seaweed
sea urchin
sea star
brittle star
sea cucumber
echinoderm
Answer:
echinoderm I'm pretty sure but I'm not 100% so if I get it incorrect I'm sorry
a convergent boundary is a location where tectonic plates move toward each other. which feature of the ocean floor is caused by one tectonic plate moving under another at a convergent boundary
a. a flat plain
b. a trench
c. a mid-ocean ridge
d. a continental shelf
Answer:
At convergent plate boundaries, oceanic crust is often forced down into the mantle where it begins to melt. Magma rises into and through the other plate, solidifying into granite, the rock that makes up the continents. Thus, at convergent boundaries, continental crust is created and oceanic crust is destroyed.
Explanation:
Answer: B. a trench
Explanation: I took the test and I also studied
Which media did you find the most helpful in learning how to ollie and why?
Answer:
The ollie is the foundation to almost every trick on the street, and most tricks on ramps. In street skating, getting that air allows you to jump curbs, to jump over or onto obstacles like rails and benches for grinds, to perform board flips and rotations, to clear stairs on a jump, and more
Answer:
The ollie is the foundation to almost every trick on the street, and most tricks on ramps. In street skating, getting that air allows you to jump curbs, to jump over or onto obstacles like rails and benches for grinds, to perform board flips and rotations, to clear stairs on a jump, and more
Explanation:
hope this helped!
25. A cell has 20 amino acids. How many molecules of tRNA are in the cell?
1. Four
2. Three
3. More than 20
4. At least twenty
5. Fifteen
6. I do not know.
Answer:
I think no 3 will be the answer.
In cell one amino acid can bind with two or three different tRNA during protein synthesis in the translation process, hence 3 option is correct more than 20 molecules are found.
What is tRNA?Because they can read nucleic acid words (like mRNA codons) and transmit the relevant messages, tRNA molecules serve as translators of amino acids. for each of the 20 amino acids.
There is a tRNA some amino acids bind to 2 or 3 different tRNAs, so cells may contain as many as 32 different tRNAs. Possibility of more than one tRNA and more than one anticodon for an amino acid, there is often only one aminoacyl tRNA synthetase for each amino acid.
Enzymes known as transfer RNA (tRNA) synthetases are responsible for joining a particular amino acid to its associated tRNA in order to produce proteins at the ribosome.
Therefore one amino acid can bind with two different tRNA in a cell during translation, hence option 3 is correct.
Learn more about tRNA, here:
https://brainly.com/question/12830175
#SPJ2
Please answer both I would mark as brainliest.
Steps of Translation
Using the following word bank: anticodons, codons, mRNA, RNA; fill in the steps of translation.
The ribosome binds to a strand of _____
This nucleic acid has
three-nucleotide codes called ______
The three-letter codes are complementary
to ________
on ________
molecules. Each of these
molecules brings with it an amino acid, which will become part of the growing polypeptide.
Answer:
The correct answer is - mRNA, codons, anticodons, RNA.
Explanation:
During the translation process of protein synthesis, the mRNA strand is attached with the ribosome in order to translate the three-letter nucleotide sequence that is called codons or triplet code into specific amino acids.
These three-letter codes are complementary to the anticodons on the RNA (tRNA) molecules. These nucleic acid molecules with ribosomes bring with them an amino acid to make a polypeptide chain.
7. The process of taking separated parts of DNA and passing an electric current through it
to separate the DNA in a gel is known as:
a. Amplification
b. PCR
C. Electrophoresis
d. Extraction
Answer:
C. Electrophoresis
Explanation:
Electrophoresis is used to seperate DNA based on its size and electrical charge, which explains why an electric current is passed through seperated parts of DNA.
In a local park, several environmental changes are noted; crayfish eggs in the lake are fewer than normal. When tested, the water from the lake has an elevated level of aluminum. What addition to the lake is the most likely cause of these conditions?
A)
acid rain
B)
lead from batteries
C)
sulfur dioxide particulates from a near-by factory
D)
carbon monoxide from cars near-by
E)
increased ozone from sun exposure
Answer:
B) lead from batteries
Explanation:
I think this is right
HELP!!!!!! I don’t get it plz help
What is the largest organ in the body
HELP ME NOOOOOOOOOOW ILL GIVE BRAINLIEST
What is the per capita growth rate of a population of 250, with 50 births and 80 deaths in a year?
A.
1.2
B.
0.12
C.
-1.2
D.
-0.12
Answer:
D.
Explanation:
The first two options, A and B, can be eliminated because we know that the growth rate must be negative — more people are dying than are being born!
The term "per capita" means per person. Which answer makes more sense, losing 1.2 people per person or 0.12 people per person? While both might be a little confusing, you can't lose more than one person per person! Therefore, the answer is D.
If a motion is not seconded, what happens to the motion?
Answer:
After a motion is proposed, if the motion requires a second and none is immediately offered, the chair of the body will usually ask, "Is there a second?" If no second is obtained within a few moments of proposing the motion, then the motion is not considered by the assembly, and is treated as though it was never offered. Such a motion may be introduced again at any later time.
Explanation:
What is that chemical compound?
Answer:
A chemical compound is a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds. A molecule consisting of atoms of only one element is therefore not a compound.
Part of a molecule found in cells is represented below
Answer:
,.,
Explanation:
nehhhhhhhhhhhhhhhhhh
Dominant traits are....
A. traits that everyone wants
B. traits that are shown over other traits
C. Traits that are hidden by other traits
D. traits that no one wants
Answer:
b. traits that are shown over other traits.
Answer:
OK the answer is B traits that are shown over other traits is correct for sure I did this in my school and got correct